矢量

At last, the trend of miss distance measurement technology is forecast. For vector miss distance measurement system, Doppler radar and impulse radar are widely developed. The system based on impulse radar has a promising development future.

矢量脱靶量测量技术的发展主要集中在多普勒雷达和冲击雷达两种体制上，其中采用冲击雷达技术的矢量脱靶量测量系统是今后发展的重要方向。

Three commixed still image coding algorithms are proposed based on them and such ideas as: zerotree coding, WMSE (which is based on mankind visual characteristics), classified vector quantization with different vectorstructures and classification methods.

首先回顾了矢量量化的基本原理和一般算法，对小波变换结合矢量量化技术的特点作出分析和总结。

The GVF force does better than the other two forces in the segmentation of complex images with concaves. The gradient plus pressure force does better in preventing the model from crossing the slim images.［KEY WORDS］ image segmentation; active contour model; GVF; open contour model

对于简单的图像，梯度外力和梯度矢量流外力均能得到较好的分割结果；对于较复杂及边界凹陷的图像，梯度矢量流外力的分割效果明显好于其他外力；对于纤细图像应用梯度加压力的外力更容易控制模型越界的现象。

The independent bases are denned for ICA. Using the independentbases in ICA, the DOA of signals can be estimated.

在此基础上，本文定义了独立矢量基，并利用独立矢量基的投影关系，对阵列中常见的DOA问题进行了研究，获得了对阵列信号的方位角估计。

A group signature of an authorized subset of participants cannot be impersonated by any other set of participants.

基于矢量空间秘密共享方案和RSA签名方案提出了一种新的签名方案，即矢量空间RSA签名方案。

In the third part, the simulation research on asynchronous motor DTC system base on six voltage space vectors and twelve voltage space vectors are realized in MATLAB/Simulink. Through comparisons of the two simulation results, the method of minifying torque ripple is obtained.

第三部分，运用MATLAB/SIMULINK进行了基于六矢量和十二矢量的两种异步电动机直接转矩控制系统的仿真研究，搭建了系统的仿真模型，并对仿真结果进行了对比，得出减小直接转矩控制转矩脉动的方法。

Combining the advantages of fixed search pattern and spatial correlation search pattern,the algorithm employs the high search accuracy of DS and the high search speed of ARPS.It performs zero motion prejudging for immobile macroblocks between the two adjacent frames to reduce the computational complexity,and employs the spatial correlation of motion vectors to improve the quality of predicted motion vectors.

该算法利用DS算法搜索精度高和ARPS算法搜索速度快的特点，综合固定模式搜索和空间相关搜索两方面的优点，对于相邻两帧图像中的不变宏块采用零运动预先判断以减少算法的计算量，并利用运动矢量的空间一致性提高预测运动矢量的质量。

The superposing method of vector and image information is especially discussed and studied, and the problems of precision influence apon images grouping because of multi-origin data are analyzed, and the designing principle and realizing methods of GIS vector and image database are elucidated.

特别探讨和研究了矢量信息与图像信息复合方法，分析了多源信息的参与对图像分类精度的影响问题；并阐述了GIS矢量数据库和图像数据库的设计原则与实现方法。

The situation is the same in our country, most research about vectored nozzles is model test, research about their infrared properties is seldom.

在我们国内尤其如此，现在我们国内对矢量喷管的研究还仅限于模型实验阶段，对矢量喷管红外辐射特性方面的研究还很欠缺。

Based on the principle that a spatial distributed source can be regarded as superposition of many of point sources in a continuous spatial area, an Electro-Magnetic Vector Sensor model is proposed. Theoretical analysis and the 1 order approximate expression are given. The model's identifiability is also discussed.

本文通过&分布源是在一定空间分布的多个点源信号的迭加&的认识，首次提出了电磁矢量传感器的分布源模型，给出了理论表达式和一阶近似表达式，分析了单个电磁矢量传感器的分布源模型的可辨识性问题。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。